Gaya APA
Cook, J. (1978).
Summary Neraca Sumberdaya Alam Nasional Tingkat Propinsi (Executive Report) .
Manila:
Natural Resources Management Center.
Gaya MLA
Cook, Jerald.
"Summary Neraca Sumberdaya Alam Nasional Tingkat Propinsi (Executive Report)".
Manila:
Natural Resources Management Center,
1978.
Text.